Paper-feeding mechanism.



J. J. ZEITZ.

PAPER Hmmm@ MEGHAMSM. APPLICATION FILED MAR.19, 1908.

- Patented. Deo. 3, 192.

2 SHEETS-SHEET l.

' lll/lll lill."I

J. J. ZEITZ. PAPERl FE'EDING* MBGHANISM. APPLIGATION FILED MAR.19, 1908.

Patented 1360.3, 1912.

Dj' A Affi/f5:

useful Improvement narran sra'rns Parana orifice.'

y l JOHN J. ZEITZ, OF CLEVELAND, OHIO, ASSIGNOR T THE AllfllRGANl MULTIGRAPH COMPANY, 0F CLEVELAND, OHIO,` A CORPORATION OF OHIO;

PAPER-Femme Meenemen.

land, in the county of Cuyahoga and State.

of Ohio, have invented a certain new and in Paper- Feeding Mechanism, of which 'the following is a full, clear, and exact description, reference being had to the accompanying drawings. Y

The object oithis inventionis to provide a simple, elfectlve and accurately controlled paper feed device for printing mechanisms.

The invention is in the nature of animprovement on the feeding mechanism shown,

described and claimed in Patent- No. 846,992 of H. C. Gammeter, the present mechanism being broadly covered by that patent and also by Patent No. 812,735 of H. GGammeter. In Patent No. 846,992 referred to, there are a pair of feed rolls and mechanism engaging one end of one of them to-.move itinto or out of engagement with the other `to control the feed. This mechanism is satisfactory under normal conditions, but under conditions where the material fed is 4thicker at one side than the other, as, for

example, an envelop, the 'shiftable roller is liable to roll with sufficient unevenness to cause one edge of the paper to be gripped with greater force than the other, therebyl f causing uneven feed.

' The present. vention is designed to positively liftor lower both ends .of the roller together notwithstanding the fact that the actuating mechanism is at one end only. This enables an absolutely true and accurate4 feed.

The invention' is well adapted for a print-` ing device of the type embodied in the GamC meter multigraph, 'wherein there isa rotary drum adapted to carry parallel lines of indi'vidual'assembled type and a rotary im# pression platen coperating therewith.

The ii'ivention is hereinafter more fully explained and .its essential characteristics set out in the claims.

Specicatldn 6? Letters aten'c;l applicati@ fue@ March 19,"19oa serial no. 421,965.

Patented Dec. 3,1912.

through the platen and adjacent parts showing also the paper stripper; Fig. Gis a perspective of the shiftable feed roller, its yoke and the paper strippers.

Referring to the parts by reference numerals, 10 represents the base and 11 and 12 the side plates of the frame. 4Above this base and between the side plates is the.

rotary drum 13 on a shaft 14 journaled in the plates and having on its end a crank or other means 15 by which it may be rotated. This drum may be forme-d to carry any l printing surface, as, for example, individual type arranged in parallel lines, as is well understood, it being deemed unnecessary to show any particular means in the drawing. Within a recess inthe drum are shown rib-- bon spools 16 which are adapted to carry ends of the ribbon extending intermediately across the type on the drum. Beneath the drum and projecting upwardly through an opening 20 in the base plate is the impression platen 21 which isv gearedby gears 22 and 23, with'the drum. This much of Athe construction is a common one in Gammeter printing machines, it being understood that the paperto be printed is .fed between the printing drum and' the impression platen .and impressed by the form on the drum' through the ribbon.

VTo feed the paper accurately l provide the following mechanism: First, a continuously rotating lower roll 25 connected by gears 2G and 27 with the platen `gear 22; second, a shiftable roller 29 above theroller 25, which is adapted to be brought into engagement with the roller or held out of cn gagement; and thiid, stop fingers .30 which are adaptedto stand normally in the path of the paper, forming a positive stop for it. but are automatically .moved 'ont of the way when the rollers come into` engagement. This 'much of the construction is shown in Gammeter Patent No. $416,992. The roll m' is' preferably composed of rubber sccauf) tions on a shaft, Aa-hile the shiftable roll 2S).

is preferably a single piece of steel formed sectionally, as shown. My mechanism re- 'lates tothe means by .which the shiftable iconnected withthem s pringsj34 the lower ends of .whichv are connected tothe frame.

" These springs tend to draw the roller down# wardly evenlyl on to the continuously revolving 4'roller 2 5. 38 represents a,v yoke,-

preferably consisting of a'thin balstanding on edge. This yoke extends "parallel -which plvot the arms 32 andBB; At .one end" and in front of the roller. 29 land across its ends'. The gudgeons V31 extend looselythrough openings` inthe yoke and thel yoke is ivoted on thev same pins 35 and?` of the yoke, as shown at 40', it extends rearwardlyfroin' its pivot and there `carries av4 rollerl 4 1", this rearward extension 4of the yolgeubgiiigpreferably off-set as shown in Figs. ta-nd" 6,- to bring the roller into convenient position.

On thedrum is an extensible cam formed of two rings,y46 and 47. Either of these rings is adapted to act 'on the roller 4l 'and thereby `depress it, raising the forwardportion of the yoke and ,thereby raising the roller 29 out of engagement with the roller communicated to each end of the roller 29 so that it is accurately lifted and not twisted. The feature of vhaving two cams which may be adjusted to vary the effective cam length is covered by an application No. 396,571 of H. C. Gammeter. It enables the time dur ing which the feed rollers are held outof engagement'to be accurately controlled.

'lf-he 'pins 35 and 36 on which the arms 32- and 33 and the yoke are pivoted are mounted in blocks 60 which are held to the base plate i ofthe frame, suitableerscigews holding the blocks".V This allowsit ,50

" convenient removal.

erably provided with a hea maybe removed from'the'outside of the niachine,`while"th e pin`36 may be removed feedro-ller to be taken out.' Theremfoval of,

blocks to the baseplatefandthe pins in the ,e asy ,positioning and adjustment of the parts as wellas their The cfpin 35 is preffrom thev inside. This'allows the yoke and these parts from the blocks 60, which act as' d1stance` p1eees betweenthe' arms and the' yoke, allows the roller' to be shifted 'in one direction. or Lthe 1 y tlie1"`, so 'that it may be taken out ofthe yoke.V i Y To lp'rof'ie'rly' rcontrol the vedges of the paper while it is passin'gfto and from the platen, lI f Vprovide 'marginal guides consisting of a pair platen and presenting i each 'af stri (is f ow e4 aper. The paper ais-fed.; between these str1 s, so 'that its edges/.are effectively gni ed. .The strips are ;held1 i nplace by screws 70' pa'ssn through"a.'"com1 non bentdown portlon o they strips into ythe base plate 10. At theirv front ends the/strips G8 and 69 flare from each other, the lower lone-.

69j curving downwardlyand passing into!l the4 openin 2() in the base plate, as shown The upper more particularly in Fig. 5. member 68 lextends .beneath the inwardly Iprojecting portions of the *pins 35 and 361 asthe case maybe, theextreme end of the 'strlpjGS- bending upwardly in front ofthese 'pin projections. The result of this construction is that a very effective guide and' guard is' provided for the edgesof the. paper, re-l ceivin -the same immediately as it passes from t e feeding rolls and insuringthe guid ing of the'paper directlyto theplaten and printing drum.l v

I ela1m: l

y1. The combination, with a' pair of co= operating feed rollers at least one of which is bodily movable, of a rigid movable member acting on bo'th ends `of the roller'l'ast. referred'to and' loosely connected therewith at one`-end at least, enabling the axis of said'A 'roller'to' change its position with reference to said member, and springs'acting inde,-

pendently on' the two ends of such roller.

2. The. combinationI of a pairl of feeding rollers, mechanism spanning the length of one of such rollers and adapted to 'operate i simultaneously on both ends thereof and -1 loosely. conneeted therewith at one end at least,'enabl1ng such'end to move bodily with reference tov said mechanism, and springs opposin such operation and acting independent y on the two ends of such roller.

3. The'combinationof a printing drum,

an limpression platen, a pair of feed rollers, a p iVoted yoke for moving both ends of one .of th`e feed rollers, the connection between theyoke and atleast one end of sch roller being loose and allowing said roller to move bodily with reference to the yoke, mechanism adjacent to one end only of the feed rollers for automatically operating said yoke, and lsprings acting independently of the 'yoke ends of the rollerlastfrefcrred to.

4. The combination of a printing member and animp'ression platen, a pair of coperating feed rollersfto. feed the paperto the imandindependentlv of each other on the two pression line, mechanism for shifting one oftheffeed rollers, said mechanism including a rigid movable bar acting on both ends of such roller and loosely connected therewith at one end at least, enabling'such rollerto move `bodily with reference to the bar,

springsactingdndependently on the two ends of such roller, and means? acting on one end of the shifting mechanism for operati ingit.

',lhe combination of a printing member and an impression platen, a pairof coperating feed rollers, a yoke pivoted independently of the printing member and platen and connected with both ends of one feed roller, at least one of such connections being'loose, enabling the axis of said roller to change its position with reference to said member, a pair of springs acting independently on the two end portions of the last mentioned feed roller, and means onthe printing member for operating said yoke.`

6. The combination of a pair of feed rollers, springs adjacent to each end of one of the fecd rollers tending to move it with reference to the other roller, mechanism extending parallel with the first-mentioned rollerl and loosely engaging both ends thereof enabling relative movement bodily of such ends, and means for operating said mechanism to move the roller.

7. The combination of a printing member vand an impression platen, a pair of coperat- .ing feed rollers, a yoke loosely connected with both ends o'f one feed roller, springs acting on said feed roller, a cam roller carried by said yoke, and a cam operating on said `cam roller.

8. The combination of a rotary printing drum, an impression platen, a pair of feed rollers, springs adjacent to each end of one of the feed rollers tending to move it into engagement with the other roller, mechanism extending parallel with the first-mentioned feed roller andv engaging both ends thereof, and means for operating said mechanism to separate the rollers.

9. The combination of a pair of feed'rollers, means for rotating one of them, a pair of pivotedarms in which the other roller is journaled near its ends, .springs acting on said arms tending to draw the rollers into engagement, a piv,oted yoke adapted to simultaneously move both ends of the roller, and means for operating the yoke.

10. The combinationpf a pair of feed rollers, a pair of pivoted arms in which one of said rollers is mounted, a yoke' pivoted adjacent to the pivots of the arms, the

i shaft' of said roller extending lo'osely into said yoke, and means for operating the yoke. 11. The combination of a rotary printing drum, an impression platerna pair of feed rollers, levers carrying the end of one of the Washington, D. C.

4tending to move this feedloller into engagement with the other, a yoke adapted to move bot-h ends of the feed roller in the direction opposite to the action of the springs,a roller on said yoke, an'd a cam on the drum adapted to engage such roller.,

12. The combination, with the printing drum and platena pair of feed rollers, a pair of pivoted arms in which one of the rollers is journal'ed... a yoke extending parallel with the feed roller and across the ends thereof, the shaftof `one'of the rollers extending loosely into the yoke, said yoke being pivoted adjacent to the pivots of the arms, one end of the yoke extending beyond its pivot, a roller carried by the yoke at such point, and a cam on the drum coperating with said roller.

13. The combination of a printing drum and an impression platen, a pair of feed rollers, one of which is mounted on pivoted arms, a pair of edge guides for the paper vleading from the feed rollers to the platen,

the pivot pins of said arms extending across said edge guides. n

` 14. The combination of a frame having a base plate with an opening in it, a platen journaled below the base plate and extending upwardly through it, edge guides at the end of the platen each ha'vinga pair of plates, the lower one of which extends downwardly into suchl opening, a printing member located above the platen, a pair of paper feed rollers in front of the platen, one of said rollers being mounted 'on pivoted arms, pivot pins for such arms extending across the upper members of the edge guides, said upper members being bent upwardly in.

front of the pins whereby a converging guide is provided for the edge of the paper. l5. The combination of a rotary printing drum, a rotary impression platen, a pair of cooperating feed rollers, a pair of independently pivoted arms in which the ends of one of the feed rollers are carried, springs acting on said arms independently, and a rigid memberA extending in part along said roller, and acting simultaneously on both ends thereof.

In testimony whereof, I hereunto aiiix my signature in the presence of two witnesses. JOHN J. ZEITZ. lVitnesses W. DUNLAP, ALBERT H. BATES.

ve cents each, 'by addressing` the Commissioner of Patents, 

